Specifications

TC35i AT Command Set
Confidential / Released
TC35i_ATC_V01.05 Page 142 of 278 04.08.2003
4.41 AT+CREG Network registration
Test command
AT+CREG=?
Response
+CREG: (list of supported <n>s) OK
Parameter
See write command
Read command
AT+CREG?
The read command returns the URC presentation mode <n> and an integer
<stat> that shows the registration status of the ME. The location information
elements <lac> and <ci> are returned only when <n>=2 and ME is registered to
the network.
Response
+CREG: <n>,<stat>[,<lac>,<ci>]
OK/ERROR/+CME ERROR
Write command
AT+CREG=
[<n>]
Use the write command to select the type of URC. There are two types of
URCs are available, both explained below:
if <n>=1: +CREG: <stat>
if <n>=2: +CREG: <stat>[,<lac>,<ci>]
Response
OK/ERROR/+CME ERROR
Parameter
<n > 0 Disable URCs
1 Enable URC +CREG:<stat> to report status change of net-
work registration
2 Enable URC +CREG:<stat>[,<lac>,<ci>] to report status
change of network registration including location informa-
tion. Please note that optional parameters will not be dis-
played during a call.
<stat> 0 Not registered, ME is currently not searching for new opera-
tor.
There is a technical problem. User intervention is required.
Yet, emergency calls can be made if any network is avail-
able. Probable causes:
· No SIM card inserted
· No PIN entered.
· No valid Home PLMN entry found on the SIM.
1 Registered to home network.
2 Not registered, but ME is currently searching for a new op-
erator.
The ME searches for an available network. Failure to log in
until after more than a minute may be due to one of the fol-
lowing causes:
· No network available or insufficient Rx level.
· The ME has no access rights to the networks available.
· Networks from the SIM list of allowed networks are
around, but login fails due one of the following reasons:
- #11 ... PLMN not allowed